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-/* FILE: psearch.h
- * PURPOSE: PATH search module
- * VERSION: 1.0 (Oct. 1995)
- * AUTHOR: Piet Tutelaers
- * (see README for license)
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-
-/*
- * This function initiates a path by using a built-in <deFault> and
- * a PATH environment variable that can be set at run time by the user.
- * A typical usage is
- * userenv = path(".:/someplace", getenv("USERENV"))
- *
- * If USERENV is not set getenv("USERENV") returns NULL and the returned
- * path equals the value of the first argument. Otherwise the returned
- * path is the value of second argument in which empty path elements are
- * replaced by <deFault>. For example when USERENV is set to "~/myplace:"
- * the resulting path will be "~myplace:.:/someplace".
- */
-char *path(char *deFault, char *env);
-
-/*
- * This function substitutes the <patterns> encountered in <str>
- * with their corresponding <value>. Recognized patterns are %b, %d,
- * %f, %F and %m. They will be replaced with their corresponding integer
- * (%b, %d) or string values (%f, %F and %m). These values can be used as
- * placeholders for basic resolution (%b), resolution (%d), font name
- * (%f or %F) or mode definition (%m). The %F is a special case for
- * representing the fontname leftadjusted in a string of eight characters.
- */
-void substitute(char *str, char *patterns, ...);
-
-#define NONFATAL 0
-#undef FATAL
-#define FATAL 1
-/*
- * Look for a <file> in <path>. Return absolute filename if found.
- * If not found return NULL (if <terminate> is NONFATAL) or terminate
- * program with appropriate message (if <terminate> is FATAL).
- * On UNIX ~ or ~someone in paths are evaluated to the proper HOME
- * directories.
- * When the path does contain recursion characters ("//" on UNIX and
- * "!!" on MSDOS) directories are searched recursively.
- */
-char *search_file(char *path, char *file, int terminate);
-
-/* set global paramaters for PK font search */
-void init_pksearch(int bdpi, char *mode, int margin, char *tolerance);
-
-/*
- * Look for a PK <font> of resolution <dpi> in <path>. To avoid floating
- * around lots of different font sizes TeX prefers to work with whole
- * and half magsteps. So instead of using a 330 dpi font for a 11 point
- * version of a 300 dpi font we would prefer the 329 dpi size because
- * this size matches magstep 0.5 of 300 (329 = int(300 * 1.2 ** 0.5).
- * The process of truncating real font sizes to magsteps can be
- * controlled by the global parameter <tolerance> which may be an
- * expression of the actual value of <dpi> itself. The value dvips(1)
- * uses for <tolerance> is 1 + <dpi> / 500 allowing more tolerance in
- * bigger sizes. Due to round-off different DVI drivers choose different
- * <dpi> sizes. With <margin> we can define what font sizes are looked
- * at whenever size <dpi> is wanted. With <margin> set to zero only the
- * exact size is looked at, while a value of one would allow for a
- * round-off of one. Both <margin> and <tolerance> can be set before a
- * search starts otherwise they get their default values (zero) with
- * init_pksearch().
- *
- * When <path> does contain placeholders like %b, %d, %f, %p and %m
- * they will be substituted by their corresponding values _bdpi, <dpi>,
- * <font>, "pk" and _mode respectivally. This allows to define paths
- * for a whole range of printers. Occurrences off ~ or * ~user in <path>
- * will be substituted by the corresponding HOME directories on UNIX.
- *
- * The result of search_pkfile() is a pointer to the name of <font> when
- * one is found otherwise NULL.
- */
-char *search_pkfile(char *path, char *font, int dpi);
-
-/*
- * evaluate <expr> after substituting %d with <dpi>. Return the
- * integer result or abort with message when invalid expression.
- */
-int evaluate(char *expr, int dpi);
-
-/*
- * Round <dpi> to a whole or half magstep of <bdpi> if the distance of
- * <dpi> is within a certain <tolerance> from it. The value of <bdpi> and
- * <tolerance> should be set with init_pksearch().
- */
-int nearesthalf(int dpi);
-
-extern int tilde;
-
-/*
- * During scanning of paths we often need to replace ~user with user's
- * HOME directory and ~ with HOME directory. Subtilde() copies the actual
- * value of `~' or `~user' from <path> into <fn>. The pointers <fn> and
- * <path> are `updated'.
- */
-void subtilde(char **fn, char **path);
-
-/* Is <name> an absolute filename? */
-int absname(char *name);
-
-/*
- * Look for font libraries in <path> (ex.: c:\emtex\texfonts;fli_0;fli_1).
- * Run <font()> function for each .fli file found in <path>. Continue
- * if this function returns 0, stop when if this function return a 1.
- * In the last case the name of the FLI file is returned.
- */
-char *search_flipath(char *flipath, int (*font)(char *, int));
-